DNA I can see, but it would take strong determination fuelled by some strong motivation to refuse to believe in fingerprints. That fingermarks were unique was known far back in history and it's easy to demonstrate its validity to a court in quite dramatic fashion. The revolutionary aspect of the "invention" of fingerprinting was the categorization that made it possible to search archives for matches.Imagine trying to prove your case on a world that doesn't believe in using DNA evidence? Or even fingerprinting?
Hans
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